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Math Help - Derivative

  1. #16
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    signs ... signs ... signs ...

    \displaystyle \frac{1}{h} \left[\frac{- 2xh - h^2}{x^2(x+h)^2}\right]

    \displaystyle \frac{1}{h} \left[\frac{-h(2x+h)}{x^2(x+h)^2}\right]

    \displaystyle \frac{-(2x+h)}{x^2(x+h)^2}
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  2. #17
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    Quote Originally Posted by wowo View Post
    Is it -2x+h/(x^2(x+h)^2 ??
    Yes. Why the doubt? (I suggest you thoroughly revise your basic algebra skills, by the way. Your weakness in that area is your real problem, not this particular question).
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